Hi all

I got my first Volvo a few weeks ago. It's a '92 740 Turbo Wagon. One owner, well-maintained, clean inside and out. Overall, I'm quite happy.

One problem: I'll be driving along and the car will just shut off. It has only happened a handful of times - maybe once or twice a week on average - and in between that it will drive just fine. And it has only happened when I'm going relatively slow, say 30 mph or so, but that might be coincidental because I have only taken it on the freeway a few times.

It doesn't stall, it doesn't run rough or slowly peter out - it just shuts off. Like someone hit a kill switch. Afterwards, I can always get it started again. It will struggle a bit. I might have to crank it a bit, stop, crank it again, etc. But it always starts up again. So far, at least.

So, any ideas? Thanks in advance.

 

Looks like I came to the right place!

 

Start by checking your fault codes for clues.
Post any codes found and then someone can start offering you suggestions.
(Might be fuel related.)

http://www.matthewsvolvosite.com/how...-obd-unit.html

 

Okay, I figured out how to retrieve fault codes. (My first Volvo, remember.) I got two:

1-4-4 and 3-1-2

Looks like the fuel injection relay is the most likely culprit. Unless someone advises me differently I guess I'll just replace that relay and see if that fixes it.

 

Update: I just pulled the fuel injection relay. I guess I was hoping to see some corrosion or other indication that it's bad, but I didn't. It looks like new. (I don't think it is, it says "made in Germany" on it.)

Looks aside, it could still be bad though, right? Is there a way to test it so I know for sure?

 

Did I post this in the wrong section?